Hummer Forums - Enthusiast Forum for Hummer Owners

Hummer Forums - Enthusiast Forum for Hummer Owners (https://www.hummerforums.com/forum/)
-   Hummer H3 (https://www.hummerforums.com/forum/hummer-h3-17/)
-   -   H3 Headers (https://www.hummerforums.com/forum/hummer-h3-17/h3-headers-23789/)

Kurtis Cleere Apr 18, 2011 09:43 AM

H3 Headers
 
Has anyone put headers on a H3 I5?

drtom Apr 18, 2011 12:34 PM

u can search, im guessing from memory.
i think theres a cat built in the exhaust manifold. prob cost a fortune in headers,or impossible,or,maybe it was $2500

04colyZQ8 May 1, 2011 10:19 PM

wouldn't The headers from a colorado I5 fit?? I think JTR has a I5 header

Draketh May 3, 2011 11:24 AM

I think the cat setup on the Alpha is different......but I would like to get new headers because I think there are pre-cat's on the headers, and I would love to get rid of those, I just don't know if any headers would even fit......

It's raining far too hard and I'm far too lazy to go look. :rolleyes:

zefrum May 3, 2011 02:22 PM

What kinda of bennefit would you get on removing the pre-cats?
wouldnt that effect emissions?

Draketh May 3, 2011 06:10 PM


Originally Posted by zefrum (Post 249585)
What kinda of bennefit would you get on removing the pre-cats?
wouldnt that effect emissions?

Better exhaust flow, if your truck is running right you shouldn't need them to pass emissions, at least not there in Ohio.

2wheelmonster May 20, 2011 10:04 AM

How about an open header no exhaust at all. Raw power

El Beasto May 21, 2011 09:05 PM

Hello,
Let me know if you do put headers on. I am going to on mine, found some longs (No Cat) and was wondering if they are worth the cost?

Thanks,
John

Draketh May 23, 2011 11:44 PM


Originally Posted by 2wheelmonster (Post 250559)
How about an open header no exhaust at all. Raw power

Yeah that will sound sweet as **** when my vtec kicks in.

I bet an open header alpha with factory nerfs will pull 12.0 quarter miles.

zefrum May 24, 2011 12:43 PM

Anyone have them on their Alpha or know who makes them? Like to get those pre cats off my self.


All times are GMT -5. The time now is 05:41 AM.


© 2026 MH Sub I, LLC dba Internet Brands